6. Tone refers to the ______ of color
A.SMOOTHNESS AND DULLNESS
b. darkness and brightness
c. hue and saturation
d. foreground and background

EXPLANATION:
Saturation refers to how strong or weak a color is (high saturation being strong). Value refers to how light or dark a color is (light having a high value). Tones are created by adding gray to a color, making it duller than the original. Shades are created by adding black to a color, making it darker than the original.

The answer is from go o gle
RIGHT ANSWER IS: A. Smoothness and Dullness

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